Greasemonkey is still one of the coolest things runnin' on Firefox. If you're programmatically inclined, you too can write your own Greasemonkey scripts for the betterment of us all. Don't know how? Mark Pilgrim has written a book on the subject - Dive Into Greasemonkey - and released it under the GPL. Mark's a heck of a good writer, & the man knows how to program, so this could be just the thing for you. Read it & make something cool!
(Check out all of our posts on Firefox and Greasemonkey.)
